Apple Motion 4 - Manual (Page 549)

Once you get the hang of how it works, you can use this method to enhance and control
the effects of behaviors. For example, you could apply a Gravity behavior which causes
an object to fall toward the bottom of the frame, but keyframe the object’s position to
move across the screen from left to right. In this way, you can create the effect of the
object falling as it moves. Or you might apply a Fade In/Fade Out behavior, but use
keyframes on the object’s Opacity parameter to limit the maximum opacity to 80%. The
clip would still fade in and out and you could continue to modify the behavior’s attributes,
but the object would never exceed the opacity value set by the keyframes.
One method for handling behaviors and keyframes is to convert behaviors to keyframes.
For more information on converting behaviors to keyframes, see
Converting Behaviors
to Keyframes .
Animation Menu
Animating in the Inspector provides additional options, such as the ability to delete or
reset keyframe information. You can also navigate between keyframes in the Inspector.
Every keyframeable parameter contains an Animation menu. If a parameter lacks a menu,
it cannot be animated.
• Enable/Disable Animation: This menu item remains unavailable until animation is applied
to the parameter either by using the Record button or by directly adding a keyframe.
Once the parameter has at least one keyframe set, the menu item is automatically
renamed Disable Animation. Choosing Disable Animation at that point effectively hides
the keyframes you have set, restoring the parameter to its default value. However, the
keyframes are not thrown away. Choosing Enable Animation again restores the
parameter to its last keyframed state.
• Reset Parameter: Removes all keyframes and settings for this parameter. The parameter
value is reset to its default value.
549 Chapter 10 Keyframes and Curves